:root,
html[data-theme="dark"] {
  /* Core: near-black + blue (professional base) */
  --bg: #0b0b0b;
  --bg-elevated: #111827;
  --bg-soft: #151b2b;
  --surface: rgba(17, 24, 39, 0.72);
  --surface-solid: #161d2e;
  --border: rgba(255, 255, 255, 0.10);
  --border-strong: rgba(255, 255, 255, 0.16);
  --text: #f8fafc;
  --text-muted: #94a3b8;
  --text-subtle: #64748b;

  /* Primary accent */
  --accent: #2563eb;
  --accent-soft: #3b82f6;
  --accent-glow: rgba(37, 99, 235, 0.35);

  /* Secondary accent — AI moments only (~5%) */
  --accent-2: #7c3aed;
  --accent-2-glow: rgba(124, 58, 237, 0.18);

  --success: #22c55e;
  --danger: #ef4444;
  --shadow: 0 18px 50px rgba(0, 0, 0, 0.35);
  --shadow-soft: 0 8px 24px rgba(0, 0, 0, 0.22);
  --radius: 18px;
  --radius-sm: 12px;
  --radius-lg: 28px;
  --header-h: 72px;
  --font-sans: "Inter", system-ui, sans-serif;
  --font-display: "Space Grotesk", "Poppins", sans-serif;
  --font-ui: "Poppins", "Inter", sans-serif;
  --max: 1180px;

  /* Atmosphere: blue-led, purple barely present */
  --mesh-a: rgba(37, 99, 235, 0.30);
  --mesh-b: rgba(37, 99, 235, 0.12);
  --hero-overlay: linear-gradient(180deg, rgba(11, 11, 11, 0.35) 0%, rgba(11, 11, 11, 0.75) 70%, #0b0b0b 100%);
}

html[data-theme="light"] {
  --bg: #f7f8fc;
  --bg-elevated: #ffffff;
  --bg-soft: #eef2f7;
  --surface: rgba(255, 255, 255, 0.82);
  --surface-solid: #ffffff;
  --border: rgba(15, 23, 42, 0.08);
  --border-strong: rgba(15, 23, 42, 0.14);
  --text: #0b0b0b;
  --text-muted: #475569;
  --text-subtle: #64748b;
  --accent: #2563eb;
  --accent-soft: #3b82f6;
  --accent-glow: rgba(37, 99, 235, 0.18);
  --accent-2: #7c3aed;
  --accent-2-glow: rgba(124, 58, 237, 0.10);
  --shadow: 0 18px 40px rgba(15, 23, 42, 0.1);
  --shadow-soft: 0 8px 20px rgba(15, 23, 42, 0.08);
  --mesh-a: rgba(37, 99, 235, 0.14);
  --mesh-b: rgba(37, 99, 235, 0.06);
  --hero-overlay: linear-gradient(180deg, rgba(247, 248, 252, 0.2) 0%, rgba(247, 248, 252, 0.72) 68%, #f7f8fc 100%);
}